Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
Send emails with Python and Gmail SMTP server
# main.py
# Import section ....
import os
import sys
from dotenv import load_dotenv
from smtplib import SMTP, SMTPException # Import SMTP module
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.base import MIMEBase
import email.encoders
# Loading ENV variables
load_dotenv()
# Constants section ....
# GMAIL account sender
SENDER = os.getenv('SENDER')
PASSWORD = os.getenv('PASSWORD')
# Accounts receivers
RECEIVERS = os.getenv('RECEIVERS').split(',')
# SMTP server options
HOST = os.getenv('HOST')
PORT = os.getenv('PORT')
# ....
# SMTP object
SMTP_OBJECT = SMTP(host=HOST, port=PORT)
# Methods section ....
# Base function
def send_email(message=""):
"""
Send an email using the credentials defined before
Parameters
----------
message : str
content to send in the message
"""
try:
SMTP_OBJECT.ehlo()
SMTP_OBJECT.starttls()
SMTP_OBJECT.login(SENDER, PASSWORD)
SMTP_OBJECT.sendmail(SENDER, RECEIVERS, message)
SMTP_OBJECT.quit()
print("Successfully sent email")
except SMTPException:
print ("Error: unable to send email")
def basic_email(message = ""):
"""
Basic email with plain text message
"""
send_email(message)
def send_from_txt():
"""
Send an email reading the content message from a txt file
"""
message = MIMEMultipart('alternative')
message['Subject'] = 'TXT file content'
message['From'] = SENDER
body = "Email message body"
content = MIMEText(body, 'plain')
message.attach(content)
# process text file
file_open = open('text.txt', 'rb')
file_content = MIMEText(_text=file_open.read(), _charset='utf-8')
file_open.close()
message.attach(file_content)
# Send email
send_email(message.as_string())
def send_attachment():
"""
Send an email with an attachment
"""
message = MIMEMultipart('alternative')
message['Subject'] = 'Attachment'
message['From'] = SENDER
attachment = MIMEBase('application', 'octet-stream')
attachment.set_payload(open('file.pdf', 'rb').read())
attachment.add_header('Content-Disposition', 'attachment; filename="file.pdf"')
email.encoders.encode_base64(attachment)
message.attach(attachment)
# Send email
send_email(message.as_string())
# Main section ...
if __name__ == "__main__":
# Message to send
message = """
this message is sent from python for testing purposes
"""
if len(sys.argv)> 1 :
if sys.argv[1] == '--help':
print('Info: ')
print('--help List the options to send an email')
print('--basic Sends a plain text email')
print('--txt Send an email from a text file content')
print('--attach Send an email with an attachment')
elif sys.argv[1] == '--basic':
print("Sending a plain text email")
basic_email(message)
elif sys.argv[1] == '--txt':
print("Sending an email from a text file content")
send_from_txt()
elif sys.argv[1] == '--attach':
print("Sending an email with an attachment")
send_attachment()
else:
print("Please give the type of message to send.")
print("For help execute `python main.py --help`")
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment